cover image
Leonar

Leonar

www.leonar.app

11 Jobs

2 Employees

About the Company

Leonar helps talent acquisition teams hire with efficiency and speed.

With Leonar, teams can automate and personalize candidate communication, unify all recruiting touchpoints into a single system, and get usable data across the entire hiring process.

Listed Jobs

Company background Company brand
Company Name
Leonar
Job Title
Lead Backend Engineer -
Job Description
**Job Title** Lead Backend Engineer **Role Summary** Lead the design, implementation, and evolution of a scalable backend infrastructure for a mobile‑first startup targeting 10 M+ daily active users. Own architecture decisions, transition strategy beyond Firebase, and establish engineering practices, culture, and operational excellence. **Expectations** - Own end‑to‑end backend strategy, balancing current Firebase use with future scalable stack. - Deliver secure, reliable, cost‑efficient services that support rapid product iteration. - Mentor a small engineering team, drive architectural standards, and maintain high operational standards. **Key Responsibilities** - Design and evolve backend architecture, including data models and API contracts. - Build and maintain scalable, backward‑compatible APIs for mobile clients. - Define and enforce SLOs/SLIs; implement monitoring, logging, tracing, alerting, and incident response. - Ensure authentication, encryption, and GDPR (or similar) compliance from day one. - Maintain and improve CI/CD pipelines and Infrastructure as Code (IaC) practices. - Document architecture, workflows, and best practices for onboarding and cross‑team collaboration. - Collaborate with mobile and product teams to balance simplicity, performance, and future scalability. - Contribute to AI‑powered features and silent push notifications to enhance user experience. **Required Skills** - Strong proficiency in JavaScript/TypeScript. - Proven experience designing and scaling backend infrastructure for millions of users. - Hands‑on with cloud platforms (preferably GCP) and Firebase (Auth, Firestore, Cloud Functions). - Deep knowledge of SQL and NoSQL databases, scalable data modeling, and API versioning strategies. - Experience with CI/CD pipelines, IaC, and operational monitoring tools. - Strong communication skills, product‑oriented mindset, and ability to drive debate and decision‑making. - Understanding of security, privacy, and compliance best practices. **Required Education & Certifications** - Bachelor’s degree in Computer Science, Software Engineering, or related field (or equivalent practical experience). - Relevant certifications in cloud platforms (e.g., Google Cloud Professional Cloud Architect) are a plus.
Paris, France
On site
Senior
09-03-2026
Company background Company brand
Company Name
Leonar
Job Title
AI Engineer - Conseil en Management
Job Description
Job title: AI Engineer – Management Consulting Role Summary Drive the end‑to‑end industrialisation of AI solutions for a leading European management consultancy. Transform proof‑of‑concepts into scalable, secure, and compliant production systems used by thousands of end‑users, and continuously innovate on agent and multimodal paradigms. Expectations - Transition POCs into reliable, high‑performance production assets. - Architect and optimise end‑to‑end AI pipelines, from data pre‑processing to fine‑tuning and deployment. - Ensure rigorous MLOps practices: CI/CD, monitoring, rollback, and compliance with data‑security regulations. - Act as a subject‑matter expert in generative and predictive AI, driving adoption and business value. Key Responsibilities - Design, train, and fine‑tune large‑scale machine‑learning models and autonomous agents. - Build, maintain, and orchestrate production‑grade pipelines (data ingestion, feature engineering, model serving). - Deploy models on secure, sovereign infrastructures; implement observability, logging, and automated scaling. - Collaborate with cross‑functional teams (sales, product, governance) to embed AI into client workflows. - Conduct research on emerging agentic and multimodal technologies to feed future solution development. - Mentor junior team members and contribute to the business unit’s knowledge base. Required Skills - Proficient in MLOps tooling (Kubeflow, MLflow, Airflow, Terraform, or equivalent). - Strong programming in Python and experience with deep‑learning frameworks (PyTorch, TensorFlow). - Expertise in model deployment (Docker, Kubernetes, ONNX, TensorRT) and automated scaling. - Deep understanding of data‑pipeline construction, feature stores, and data‑quality engineering. - Knowledge of security, privacy, and compliance standards (GDPR, ISO/IEC 27001). - Experience with monitoring and observability solutions (Prometheus, Grafana, ELK). - Familiarity with generative AI (LLMs, vision‑language models) and multimodal frameworks. - Excellent communication skills to translate technical concepts to business stakeholders. Required Education & Certifications - Bachelor’s or Master’s in Computer Science, Machine Learning, Data Engineering, or related technical field, or an equivalent business‑to‑technology qualification. - Preferred: MSc/PhD in AI/ML or MBA with a strong technical focus. - Certifications in MLOps (MLOps Certified Practitioner, TensorFlow Developer, or similar) and cloud platforms (AWS, GCP, Azure) are advantageous.
Paris, France
On site
09-03-2026
Company background Company brand
Company Name
Leonar
Job Title
Développeur Support (H/F) - CDI
Job Description
Job Title: Support Developer (WMS/APS) Role Summary: Deliver end‑to‑end technical support for warehouse management (WMS) and advanced planning (APS) software, diagnose incidents, implement quick and effective fixes, collaborate with development and integration teams, and maintain accurate technical documentation. Expectations: Provide expert, client‑focused support, ensure timely resolution of tickets, uphold high quality standards, and continuously improve service processes. Key Responsibilities - Qualify and triage user assistance requests for WMS/APS solutions. - Analyze and diagnose technical incidents; propose and implement efficient solutions. - Develop code corrections, write SQL queries, and perform database fixes. - Escalate complex issues to internal development or integration teams when necessary. - Test corrections and updates before client delivery to ensure reliability. - Track tickets from log to closure, providing status updates to stakeholders. - Maintain clear, proactive communication with clients throughout support lifecycle. - Update and maintain technical documentation, contributing to knowledge base improvements. - Participate in continuous quality improvement initiatives for service delivery. Required Skills - Strong programming capabilities (language proficiency not specified; typical for WMS/APS environments). - Advanced SQL skills for querying and database maintenance. - Excellent analytical and diagnostic abilities. - Experience or familiarity with logistics, WMS, ERP environments is advantageous. - Team‑oriented with strong sense of ownership and autonomy. - Outstanding client‑service mindset and effective communication skills. Required Education & Certifications - Bachelor’s degree in Computer Science, Information Technology, or equivalent practical experience. - Relevant certifications (e.g., SQL, .NET, PL/SQL) welcome but not mandatory.
Lyon, France
On site
09-03-2026
Company background Company brand
Company Name
Leonar
Job Title
Business Developer ( H/F )
Job Description
Job title: Business Developer (H/F) Role Summary: Drive regional expansion of a health‑tech startup by creating and executing a B2B commercial strategy for new geographic segments. Act as a market ambassador, educating stakeholders on innovative home‑care solutions and building a high‑quality network of strategic prescribers. Excatations: Achieve target market share growth and revenue increases, maintain autonomy in prioritization, and align commercial activities with the company’s social impact mission. Key Responsibilities: - Define and launch a commercial strategy for a designated new region. - Prospect, nurture, and secure relationships with key prescribers (hospital directors, health directors, social workers). - Expand market share and generate revenue growth within the assigned territory. - Manage daily sales operations, reporting, and process optimization. Required Skills: - Strong commercial leadership with data‑driven, results‑oriented mindset. - Proven sales experience (minimum 2 years) in B2B environments, preferably in medical/health or socio‑care sectors. - Excellent negotiation, communication, and stakeholder‑management abilities. - Self‑driven, highly disciplined, and comfortable handling multiple priorities autonomously. - Empathy and passion for social impact and customer‑centric value creation. Required Education & Certifications: - Bachelor’s degree in business, management, or related field (top business school preferred).
Paris, France
On site
Junior
16-03-2026